Re: WTB: RX02 Floppy Disks

Output: .SET DU CSR=17760340 ?DU-W-Patch handler bootstrap, put CSR at 3264 As you may have already learned, use only 16bit addresses for this. Hi Jerry, Thanks, you found the failure! (it's always the same with Copy and Paste). After I have corrected this to 160340 and afterwards all was

Re: WTB: RX02 Floppy Disks

> On Aug 4, 2017, at 1:09 PM, Ulrich Tagge via cctalk > wrote: > > Hi Jerry, >> You’ve made pretty good progress. > Yes with the right input and help this can happen. ;-) > And all the help is much appreciated! Glad to share. >> >> If you haven’t already, Google for

Re: WTB: RX02 Floppy Disks

Hi Jerry, You’ve made pretty good progress. Yes with the right input and help this can happen. ;-) And all the help is much appreciated! If you haven’t already, Google for and look at the manual for the SQ739. I think you will find that most of the commands for the on-board diagnostics are

Re: WTB: RX02 Floppy Disks

> On Aug 3, 2017, at 4:28 PM, Ulrich Tagge via cctalk > wrote: > > Hi All, > All my 8" SSDD /SSSDdisks are non formatted, which was the reason for my > initial troubles. > Nevertheless, my IBM System /23 (Type 5324) can format disks in three > different formats: > >

Re: WTB: RX02 Floppy Disks

Hi All, All my 8" SSDD /SSSDdisks are non formatted, which was the reason for my initial troubles. Nevertheless, my IBM System /23 (Type 5324) can format disks in three different formats: _1. IBM System /23 Format_ 512 Bytes per Sector Possible Disk: SSSD, SSDD, DSDD _2. Standard Format_ 128

Re: WTB: RX02 Floppy Disks

On 8/2/17 8:49 AM, Al Kossow via cctalk wrote: On 8/1/17 10:36 PM, Ulrich Tagge via cctalk wrote: Looks like I was wrongly under the impression, that there is no way to reformat, disks to work in an RX02. There is no way to low-level format disks on a DEC RX01 or RX02. The hardware

Re: WTB: RX02 Floppy Disks

Hi All, Have managed to find and pick a bunch of SSSD 8" Disks in my basement, and have formatted them now via the IBM /23. Over the weekend I try the next step,and will "format" them under RT11. So fingers crossed, that my only running RT11 system, installed on an DEC RC25, will still boot.

Re: WTB: RX02 Floppy Disks

On Wed, Aug 2, 2017 at 9:46 AM, Jay West via cctalk wrote: > Assuming DEC hardware. ISTR that if you have one of the fairly common DSD > drives (ex DSD440/880) then you can in fact format the RX02 disks. > Also the SMS 1000 can low level format blank disks in RX01, RX02,

Re: WTB: RX02 Floppy Disks

correct that was how I've always low-level formatted RX02s, using 3rd party controllers. On 8/2/17 9:46 AM, Jay West wrote: > Eric (via AEK) wrote > -- > "RX02 format uses single-density address fields even for double density. The > RX02 can "reformat" standard single-density

RE: WTB: RX02 Floppy Disks

Eric (via AEK) wrote -- "RX02 format uses single-density address fields even for double density. The RX02 can "reformat" standard single-density into RX02 modified MFM format just by rewriting all of the data fields. It still can't low-level format a blank or MFM disk." So you

Re: WTB: RX02 Floppy Disks

ok, got this clarification from Eric Smith "RX02 format uses single-density address fields even for double density. The RX02 can "reformat" standard single-density into RX02 modified MFM format just by rewriting all of the data fields. It still can't low-level format a blank or MFM disk." So

Re: WTB: RX02 Floppy Disks

On Wed, 2 Aug 2017, Al Kossow wrote: There is no way to low-level format disks on a DEC RX01 or RX02. The hardware doesn't support it in the controller inside the DEC disk drive. DEC expected you to buy media from them. Not really. You can use any standard 3740 formatted disk (i.e. 26

Re: WTB: RX02 Floppy Disks

On 8/1/17 10:36 PM, Ulrich Tagge via cctalk wrote: > Looks like I was wrongly under the impression, that there is no way to > reformat, disks to work in an RX02. There is no way to low-level format disks on a DEC RX01 or RX02. The hardware doesn't support it in the controller inside the DEC

Re: WTB: RX02 Floppy Disks

Hi All, Looks like I was wrongly under the impression, that there is no way to reformat, disks to work in an RX02. I have two working IBM System /23 with 8" Floppy drives, which can format also in IBM3740. So when I have understood it correct, it could be worth to simply format an 8" SSSD

Re: WTB: RX02 Floppy Disks

On Tue, Aug 1, 2017 at 6:21 PM, Charles Dickman via cctalk < cctalk@classiccmp.org> wrote: > Are RX02 disks actually special or will any SSDD 8in floppy work? TL;DR: No. As standard 8-inch floppy disks go, only SSSD are useful in an RX02 drive, even for double-density use (DEC RX02 modified MFM

Re: WTB: RX02 Floppy Disks

I have many RX02 disks, but shipping to Germany may be too expensive. Let me know if there is no local source. I am located in Landenberg, PA USA b On Tue, Aug 1, 2017 at 8:21 PM, Charles Dickman via cctalk < cctalk@classiccmp.org> wrote: > On Tue, Aug 1, 2017 at 4:53 AM, Ulrich Tagge via

Re: WTB: RX02 Floppy Disks

On Tue, Aug 1, 2017 at 4:53 AM, Ulrich Tagge via cctalk wrote: > I'm interested on RX02 Disks, and would be happy to get some of them, to > create RT11 installation and diagnostic disks. > I know there are RX01/02 emulators available, but I would like to use the > original

Re: WTB: RX02 Floppy Disks

oops, Germany. On Tue, Aug 1, 2017 at 7:08 PM, william degnan wrote: > where are you located? > > On Tue, Aug 1, 2017 at 4:53 AM, Ulrich Tagge via cctalk < > cctalk@classiccmp.org> wrote: > >> Hi all, >> >> I'm interested on RX02 Disks, and would be happy to get some of

Re: WTB: RX02 Floppy Disks

where are you located? On Tue, Aug 1, 2017 at 4:53 AM, Ulrich Tagge via cctalk < cctalk@classiccmp.org> wrote: > Hi all, > > I'm interested on RX02 Disks, and would be happy to get some of them, to > create RT11 installation and diagnostic disks. > I know there are RX01/02 emulators available,